All hairpins for Wilson frames are made in China. Selected frames are then culled for mass, balance, flex, etc from these runs. These are shipped to a shop for drilling, final balance, mass, SW/TW adjustments, paint, etc. One offs may be made in R&D departments, but when it comes to dozens of frames for each sponsored pro, this would not be feasible. It would also not be feasible to set up a factory to make several hundred to a few thousand frames. 3¢